A Chino man, who was a former student at Ayala High School in Chino Hills, was arrested Tuesday on suspicion of making threats to “shoot up the school.”

The report of school threats was one of several in recent days across the Inland Empire, including one in San Bernardino where lawfully owned and secured guns and ammunition were seized from a home with a warrant. The reports are part of a groundswell since the Feb. 14 slaying of 17 people at a Florida high school.

Ayala High was not in session when authorities received notice Monday afternoon of an alleged plot by a former student, according to a San Bernardino County Sheriff’s news release. Upon investigation, Nicholas Ceballos, 19, was identified as the former student suspected of making the threats, the release stated.

Detective Wendy Beaton and Deputy Eileen Smith obtained a search and arrest warrant for Ceballos and his home. Ceballos was located shortly after 12:30 a.m. Tuesday, taken into custody and booked into West Valley Detention Center in Rancho Cucamonga on suspicion of criminal threats. Later Tuesday afternoon, Ceballos posted bail and was no longer in custody, according to the sheriff’s department.

In San Bernardino, police and FBI investigators were alerted Saturday about a 16-year-old student at San Gorgonio High who posted a video on social media showing firearms and a reference to them being used as a “School shooting starter kit,” according to a police news release. A song in which the lyrics are about a school shooting was playing in the social media post.

No specific threats were made nor were any locations mentioned, police said in a release.

“The student who posted the content did not make any threats to our school safety; however, the content got the attention of law enforcement,” according to a San Bernardino City Unified School District letter sent Tuesday to parents.

San Bernardino police obtained a warrant Monday and searched the student’s family home, according to a release. Officers found 11 firearms and hundreds of rounds of ammunition. The firearms were secured in a gun safe and were all lawfully owned by the student’s stepfather, according to police.

All of the firearms and ammunition were seized while the investigation is ongoing. Investigators also are examining the student’s phone and computer, which were taken as evidence when the search warrant was executed.

San Bernardino Unified would not say what disciplinary action, if any, the student received, citing confidentiality of student discipline records, said Linda Bardere, district spokeswoman.

No arrests were made, and the case will be referred to the San Bernardino County District Attorney’s Office once the investigation is complete, according to police.

In another report, Hemet police investigated an “inappropriate” social media post involving Tahquitz High School and concluded that there was never a threat to students or staff, the school’s principal said Monday evening in a message to parents.

Principal Eric Dahlstrom said administrators for the school “were notified about a student who made an inappropriate posting via social media.” Dahlstrom said in the message that staff members and the Hemet Police Department investigated the threat on Monday, Feb. 26.

“No weapons were located, and at no time was the site in any imminent danger. The Hemet PD has taken appropriate action,” Dahlstrom wrote.

He did not describe the content of the messages or what platform was used.

In Redlands, security personnel at Redlands High got third-hand information from a student who reported that she saw a Snapchat message on another student’s cell phone indicating a threat by a third student, said Carl Baker, city spokesman, in an email. Redlands police contacted the male student who allegedly made the threat. He denied making any threats and having a Snapchat account.

Police accompanied the student to his home, contacted his parents and found no credible evidence of any threat, Baker said.

“The investigation showed that there was never any threat made against the school of any kind, the rumors were unfounded,” Redlands High posted Tuesday in its mobile phone app.

The Redlands Police Department also is conducting an investigation following a report of a suspicious person on campus at Redlands High, according to the police department’s Facebook page. “At this time, RPD does not believe there is any credible threat to the campus or its students,” the post states.

Also, Banning police said a Snapchat message seen Sunday that threatened a school shooting at “BHS” was for Belen High School in New Mexico, where authorities have a juvenile suspect in custody, and not Banning High School.

Several Banning residents had received the message, which appears to have gone viral and was received by high schools throughout the country. Banning Police as a precaution said they planned to have extra officers patrolling the Banning High School campus during this week, but assured residents all areas schools were on normal schedule.

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